I didn't mean to offend anyone by what I wrote. My goal is to help people live as long and as well as possible and I see this group of folks as the most likely to do that.
The mortality statistics that I quoted are from the USRDS for all patients on dialysis in any stated year. It doesn't matter how many patients there are...the rate is quoted as a number per thousand patients. You can translate this into a percentage by dividing by 1000. The data USRDS reports is adjusted by age, gender, race, ethnicity, primary diagnosis and how long the patient had been on dialysis. The data is compiled by epidemiologists at the University of Minnesota under a contract with Medicare. Their data is widely accepted to be accurate.
Actually the Kt/V data came from the ESRD Networks. When they reported that 80% of patients on dialysis in 1998 had a Kt/V at or above 1.2, it's my understanding that this data was reported by clinics to the ESRD Networks. The same is true when I said that in 2003, 91% of patients had a Kt/V at or above 1.2.
When I reported the percentages of patients with adequate dialysis along with mortality rates, I didn't mean to say that Kt/V is the only factor that influences mortality rates. I don't much faith in Kt/V. I believe there are many factors, some of which are not collected nationally, that could contribute as much if not more to survival. In fact, Dori and I believe that physical and mental functioning are underappreciated as risk factors for poor outcomes in dialysis patients. Large studies have shown these factors predict mortality and hospitalizations at least as well as Kt/V. We think identifying at risk patients and treating them could improve survival rates. Try out one of these surveys at:
http://www.amIhealthy.com (registration required, darn it)